Brake-operating mechanism



J. A. CARNEY.

BRAKE OPERATING MECHANISM.

APPLICATION FILED Aue.31.1914.

1,328,494, Patented Jan.20,1920.

3 SHEETS-SHEET I.

J. A. CARNEY.

BRAKE OPERATING MECHANISM.

APPLIICATION FILED Aue.sl. 1914.

v 1 ,328,49l, Patented Jan. 20, 1920.

3 SHEETS-SHEET 2.

p "ll" WZZZeJJeS 1 5 m 3 SHEETS-SHEET 3- Patented Jan. 20, 1920.

Im Q @lllllllll -J.A.CARNEY.

BRAKE OPERATING MECHANISM.

APPLICATION FILED AUG 3| I914 7 .ZZhaewrorv a/WeJL/K 6 4271 JAMES A.CARNEY, OF AURORA, ILLINOIS.

Specification of Letters Patent.

BRAKE-OPERATING MECHANISM.

Patented J an. 20, 1920.

Application filed August 31, 1914. Serial No. 858,390.

To all whom it may concern:

Be it known that 1, JAMES A. CARNEY, a citizen of the United States,residing at Aurora, in the county of Kane and State of Illinois, haveinvented certain new and useful Improvements in Brake-OperatingMechanism, of which the following is a specification.

This invention relates to improvements in brake operating mechanism. Themain object of this invention is to provide a construction adapted to beattached to a railway car and especially adapted to be attached to thattype of passenger or other car having no platform.

A further object consists in providing and arranging the structure incombination with the end wall of the car to operate the brake mechanismmay be operated from within or and exteriorly of the car so that thebrake mechanism may be operated from within or without the car withequal facilities.

Still another object is to provide brake operating mechanism whichcomprises operating levers or the like coacting with a ratchet wheel anddrum which are operatively connected to the brake mechanism, alsoincluding means .to permit winding of the drum in one direction and toprevent its re-rotation or unwinding, the mechanism being arranged andconstructed so that proper movement of the operating levers or the likewill effect release of the holding means.

These and other objects will be more fully set forth and described inthe following specification and accompanying drawings, in which;

Figure 1 is a side elevation of my improved structure as applied to theend wall of a car;

Fig. 2 is an end elevation of the same;

Fig. 3 is a perspective of the bracket or frame;

Fig. 4 is a perspective of the drum and shaft detail;

Figs. 5 and 6 are perspectives of the detent and pawl, respectively.

Fi 7 is a sectional view taken line 7 of Fig. 2.

Fig. 8 is a sectional view of a modification for use where it isinconvenient to use an inside lever.

Fig. 9 is a detail of the same; and

Fig. 10 is a perspective view of the modified form.

along the Like numerals refer to like elements throughout the drawings,in which 10 de notes the end wall of the car to which are applied theplates 11, 12, on either side thereof. A frame or bracket generally indicated by numeral. 13 is provided, as shown in Fig. 3, this bracketbeing provided with the base portion 13 and offset bearing portion 13integrally formed therewith, the angularly disposed portion 13connecting the portions 13 13". To insure rigidity and strength Iprovide a rib 13 integrally formed with and extending between theportions 13 13. The portion 13 is provided with the apertured bearingportion 13 and the outwardly projecting flange 13* adjacent thereto. Aboss 13 is provided adjacent the juncture of portions 13, 13, this bossbeing apertured and internally threaded as indicated by numeral 13 Whenassembled, bolts 14L extend through apertures 13 in base portion 13through the plates 11, 12 and the end wall 10 of the car serving tosecure the frame 13 thereto, as shown in Fig. 1. A shaft 15 extendstransversely through the wall 10 and is journaled adjacent one extremityin the bearing collar 16 which rests against the plate 11. Attached tothe shaft 15 adjacent collar 16, and outwardly thereof is the hub 17 ofoperating lever 17, a key 18 serving to secure the shaft and leveragainst relative rotation. The end of the shaft 15 is reduced andthreaded at 15* and a nut 19 is threaded thereon to hold the lever 17attached thereto.

A drum 20 is rotatably mounted on shaft 15 outwardly of the plate 12, asshown in Figs. 1 and ft, and this drum 20 carries an eye. Or shackle 21for engagement with the chain of the usual brake mechanism. This drum isjournaled in the aperture 13 of bracket 13 and outwardly thereof isprovided with the ratchet wheel 22. The shaft 15 extends through thedrum 20 and ratchet wheel 22 and attached adjacent its outer extremityis the operating lever 23 secured thereto by key 24 and prevented fromre moval therefrom by nut 25 threaded on the reduced end 15 of shaft 15.Pivot-ally attached to lever 23 below the ratchet wheel 22 is the pawl26 attached thereto by means of the bolt 27. This pawl 26 is providedwith the extended cam portion 26* normally serving to maintain theforward end 26 in engagement with the ratchet wheel The lever 23 iscontinued upwardly of the shaft 15 and is provided with the inturnedflange 23. A bolt or pin 30 is threaded into the aperture 13 in bracket13 and a detent 31 is pivotally mounted thereon, this detent beingprovided with the tooth 51 and rear cam arm 31, the arrangement beingsuch that tooth 31 will normally engage toothed ratchet wheel as shownin Fig. 2. The detent 31 is located beneath the overhanging flange .23of lever 23, such flange being ,provided with the inclined under-surface23% see Fig. 2. The arrangement of the above described mechanism is suchthat movement of the lever in the direction indicated by the arrow inFig. 2 results in the rotation of the ratchet wheel 22 in the direc--t-ion indicated, operating through the me dium of drum 20 to wind up thebrake chain, not shown, and thereby apply the brakes. Reverseoscillation of this lever 23 will cause the pawl 26 to slip over theratchet 22 in a usual well known manner while the litter is held againstreverse rotation by means of the detent 31 so that repeated oscillationsof lever 23 will operate to apply the brakes and the detent 31 willserve to prevent their release until desired.

l Vhen it is desired to release the brakes the lever 23 is swung orrotated in a direction opposite to that of the arrow until can: arm 26contacts with the near face of shonlder or flange 13 when the latterwill cause positive disengagement of the pawl 26 from the ratchet wheel22. At the same time the inclined face 23" of flange 1,) '1; n U ()1 e\w]. LU will contact with the cam face 31 of detent 31 and will effect aoositive disengagement of such detent. It will be apparent that both thepawl and detent having been positively disengaged from ratchet wheel 22,the latter will be allowed to unwind, causing re lease of the brakes.

The same operation may be performed by operation of the lever 17 on theinterior of the car so that I have provided mechanism. operable fromeither inside or outside of the car and therefore especially adapted forattachment to the end. wall of cars having no platforms or freight carswhu'e projection of brake levers and hand wheels above the top of thecar is undesirable. It will be ob Vious that the lever 17 may be omittedif so desired.

In Figs. 8, 9, 10, 1 have shown a modification especially adapted foruse on freight cars and where it is desirable to econo::.. [.e. the costof manufacture being considerably less. The shaft 15 is journaled plates16 and bracket 13 carried by the end wall of the car and to this shaftis attached the chain. which operates the brake mechanism proper. Theratchet wheel 22 is keyed or similarly secured to the shaft as shown inthe, drawings. The, operating lever 28 is rotatably mounted on the shaft15 and carries the pawl 26 as in the embodiment shown in Figs. 1 and 6.The detent 31' is similar to and operates in the same manner as in theother construction. The operation of this modification differs only inthat lever 23 rotates on shaft 15 while ratchet wheel 22 is securedthereto and operates to wind up the chain directly thereon.

It will also be obvious that my device is susceptible of manymodifications and improvements, and I do not wish to be restricted tothe showing or description beyond the scope of the appended claims.

I claim- 1. In a device of the class described, a bracket member adaptedto be attached to a car wall, a. shaft supported by said bracket member,a drum rotatably mounted on said shaft, a ratchet wheel carried by saiddrum, a lever mounted on said shaft adjacent said ratchet wheel andnormally depending therefrom, a pawl pivoted on said lever and actuatedby gravity to engage normally said ratchet wheel whereby rotation ofsaid lever in one direction will rotate said ratchet wheel, a detentmember to prevent reverse rotation of said ratchet wheel, and meanscarried by said lever independently of said pawl to disengage saiddetent upon abnormal throw of said lever.

2. In a brake-operating mechanism, a bracket adapted to be attached to acar wall, a shaft supported by said bracket, a drum rotatably mounted onsaid shaft, a ratchet wheel carried by said drum, a lever mounted onsaid shaft adjacent said ratchet wheel and normally depending therefrom,a pawl pivoted on said lever and actuated by gravity to engage normallysaid ratchetwheel whereby rotation of said lever in one direction willrotate said ratchet wheel, a detent member movably mounted adjacent saidratchet wheel and actuated by gravity to normally engage the same andprevent reverse rotation thereof, and a transverse flange projectingfrom said lever to coiipcrate with said detent and disengage the samefrom said ratchet upon reverse movement of said lever.

3. In a device of the class described, a bracket adapted to be attachedto a car wall, a ratchet member supported. b y said bracket, anoperating member, means carried by said operating member for engagingsaid ratchet member to rotate the same upon proper movement of saidoperating member in one direction, a pivotally mounted detent moi berarranged to hold said ratchet member normally against reverse rotation,said detent member comprising a cam portion and a toothed portionoppositely disposed with respect to the pivotal of said member, andmeans carried by and relatively fixed with respect to said operatingmember to coact with said cam portion and disengage said detent memberupon proper movement of said operating member.

4. In a device of the class described, a bracket adapted to be securedto the car wall and having a bearing portion offset from and parallel tosaid car wall, a horizontally extending shaft engaging said car wall andextending through said bearing portion, a drum journaled in said bearingportion and rotatably mounted on said shaft, a ratchet wheel carried bysaid drum, an operating lever mounted on said shaft adjacent saidratchet wheel, a pawl pivoted on said lever and arranged to normallyengage said ratchet wheel, a detent pivoted on said offset portion ofsaid bracket'and arranged normally to prevent reverse rotation of saidratchet wheel, and a member carried by said lever and arranged todisengage said detent upon abnormal throw of said. lever.

5. In a device of the class described, a bracket adapted to be securedto a car "all and having an off-set bearing portion, a rotatable shaftextending through said car wall and through said bearing portion, a drumjournaled in said bearing portion and rotatably mounted on said shaft, aratchet wheel carried by said drum, an operating lever secured to saidshaft adjacent said ratchet wheel, a pawl pivoted on said lever andarranged to normally engage said ratchet wheel to rotate the same uponproper rotation of said lever, adetent to prevent re verse rotation ofsaid ratchet wheel, and a second operating lever secured to said shafton the side of said wall. opposite said first named lever.

6. In combination with end wall, a shaft extending through and rotatablein said end wall, an operating lever secured to said shaft on one sideof said wall and normally depending therefrom, a drum rotatably mountedon said shaft, a ratchet wheel carried by said drum adjacent said lever,a pawl pivoted on said lever below said ratchet wheel and actuated bygravity to normally engage the same, whereby rotation of said lever inone direc tion will rotate said ratchet wheel, a detent to preventreverse rotation of said ratchet wheel, a member mounted adjacent saidratchet wheel to coact therewith and disengage said pawl upon abnormalthrow of said lever, and a second lever secured to said shaft foroperating said ratchet wheel from the other side of said wall.

7 In combination with a car having an end wall, a shaft extendingthrough and rotatable in said end wall, an operating lever attached tosaid shaft on one side of said wall, a drum rotatably mounted on saidshaft, a ratchet wheel carried thereby, a second lever attached to saidshaft adjacent said ratchet wheel, a pawl pivotally attached a carhaving an to said second named lever normally engag ing said ratchetwheel, a pivotally mounted detent normally engaging said ratchet wheelwhereby proper rotation of either of said levers will rotate saidratchet wheel in one direction, said detent serving to normally preventreverse rotation, means to positively disengage said pawl fromengagement with said ratchet wheel upon proper movement of said levers,and means carried by said second named lever to positively disengagesaid detent upon such last named movement of said levers.

8. In a device of the class described, a pair of levers mounted one oneach side of a car wall, a shaft extending through said wall andengaging said levers, a ratchet mounted adjacent one of said levers, apawl mounted on said last-named lever and arranged to engage said.ratchet, brake operating means arranged to be actuated by said ratchet,the operation of either of said levers being arranged to operate saidratchet by means of said pawl. and means mounted adjacent said ratchetwheel and adapted to coact directly with said pawl upon abnormal throwof said first named lever for disengaging said pawl from said ratchetwheel.

9. In a device of the class described, a bracket adapted to be attachedto a car wall. a rotatable shaft extending through said car wall andthrough said bracket, a ratchet mounted on said bracket concentricallywith said shaft, an operating lever secured to sand shaft adjacent saidratchet wheel, a pawl pivoted onsaid lever and arranged to engage saidratchet wheel to rotate the same upon proper rotation of said lever, asecond lever secured to said shaft on the side of said car wall oppositesaid first-named lever, brake operating connections extending to saidratchet, and a laterally extending flange carried by said bracket tocoact directly with said pawl and disengage the same from said ratchetwheel upon abnormal throw of said first named lever.

10. A ratchet actuating mechanism comprising in combination, a shaft,supports in which said shaft is rotatably mounted, a hand lever securedto said shaft, a pawl pivotally carried by said lever, a drum rotatablymounted on said shaft, a ratchet wheel attached to said drum and havingits peripheral teeth lying in the path of said pawl, a locking pawlcarried by the shaft support and normally engaging the teeth of theratchet wheel to prevent backward rotation of said drum, and a secondlever fixed to said shaft at a point removed from said first namedlever, whereby said shaft may be rotated by said second named lever andsaid first named lever and connected mechanism thereby operated, saidfirst named lever having a part adapted to directly engage said lockingpawl to move the same out of engagement with said ratchet wheel.

11. In a device of the class described, a bracket adapted to be securedto a car wall and having an off-set bearing portion, a shaft extendingthrough said bearing portion, a drum journaled in said bearing portionand rotatably mounted on said shaft, a ratchet wheel carried by saiddrum on the opposite side of said bearing portion from the body of saiddrum, an operating lever on said shaft adjacent said ratchet wheel, apawl pivoted on said lever and arranged to normally engage said ratchetwheel, a detent normally engaging said ratchet wheel to prevent reverserotation thereof, means carried by said lever to disengage said de tentfrom said ratchet wheel upon abnormal throw of said lever, and meanscarried by said bracket to disengage said pawl from said ratchet wheelupon abnormal throw of said lever.

12. In a device of the class described, a bracket adapted to be securedto a car wall and having an off-set bearing portion, a shaft extendingthrough said bearing portion, a drum journaled in said bearing portionand rotatably mounted on said shaft, a ratchet wheel carried by saiddrum, an operating lever on said shaft adjacent said ratchet Wheel, apawl pivoted on said lever and arranged to normally engage said ratchetwheel, a detent normally engaging said ratchet wheel to prevent reverserotation thereof, a transverse flange carried on said lever to coactwith said detent and move the same out of engagement with said ratchetwheel upon abnormal throw of said lever, and a transverse flange carriedby said bracket to coact with said pawl and disengage the same from saidratchet wheel upon abnormal throw of said lever.

In testimony whereof, I have subscribed my name.

JAMES A. CARNEY.

Witnesses:

E. J. BABBITT, C. W. ROBERTSON.

